PSI Active Bass Trap

[Guest BadEnglish]

Looks like the PSI will be the safest option. Anyone tried other brands other than PSI? I am running out of space for my music collection and products like these will allow me to let go my four bulky bass traps to make way for more space

 

It's very safe to advise you to have home trail for a few days.

[Chowbotak]

To have home trial, I'll need to remove my four bass traps, meaning have to sell them off cos I absolutely have no space to park them in my mediocre HDB flat. Sekaly sell aldy I prefer the bass traps. So another question is, is it safe for me to sell my bass traps ;D

[Guest BadEnglish]

To have home trial, I'll need to remove my four bass traps, meaning have to sell them off cos I absolutely have no space to park them in my mediocre HDB flat. Sekaly sell aldy I prefer the bass traps. So another question is, is it safe for me to sell my bass traps ;D

 

Your LPs are considered basstrap.

You can move out your basstrap to another room.

Listen for a few days,  without them.

Then get active basstrap home trail a few days.

 

 

If you are a pure stereo or music old man,  I know you are,  then you will prefer,........ pure

[kimurastanley]

I am having 2 PSI bass trap at 2 diagonal corners of my living room.

Works very well for me

[Chowbotak]

Your LPs are considered basstrap.

You can move out your basstrap to another room.

Listen for a few days,  without them.

Then get active basstrap home trail a few days.

 

 

If you are a pure stereo or music old man,  I know you are,  then you will prefer,........ pure

 

Brother, I aldy said, I have absolutely no other space to park them in my mediocre HDB flat. Hmm.... maybe professor cscbb can help? ;D

[Guest BadEnglish]

Brother, I aldy said, I have absolutely no other space to park them in my mediocre HDB flat. Hmm.... maybe professor cscbb can help? ;D

 

Corridor  ;D

[Sound Affairs]

As seen in the Wilson / Audio research showroom at the recently concluded Hong Kong Hifi 2018 Show. 

 

4 PSI AVAA C20 Active Bass Traps (2 stacked) at the 2 corners behind the Wilson speakers to improve the bass performance.

 

 

 

 

Cheers.

 

James.

[whitesox]

It's very safe to advise you to have home trail for a few days.

 

yeah... especially for the price of $1k or/and above

I will start to Q

[nfnc]

I am using the AVAA in an untreated but well damped room. Was skeptical at first, given the rave reviews, even after ronildoq’s empirical findings.

 

However, from the home demo in my room, it really does work. The first thing that I noticed was the perceptible reduction (or elimination, depending on the track) of bass overhang. The “... mmm” bit of a “boom” note doesn’t slur into and interfere with the “boo..” of the next note.

 

Bass notes are cleaner, more textured. Due to the elimination of bass bloat and congestion, it does help clear up the lower mids and, to a lesser extent, the mids. At the maximum absorption setting, I found the sound a tad dry (even if it is possibly more correct), so I have dialed it down to 3/4 for now.

 

Sometimes, resistance is futile [emoji16].

 

[joeling]

 

Before

 

 

 

After

 

 

Placement is behind listening position

 

 

My room

 

I have bass traps in a few strategic places but still some standings waves. 2 units of the active bass traps helped. Bass is now more defined.

[nfnc]

Good to see measurements before and after [emoji106]

 

Was the placement behind the listening position arrived at after trying various spots in your room? 

 

Did you try placing them behind the speakers too?

[milk_vanilla]

 

Just wondering if you guys keep turn this ON all the time or just during listening period - if not forgotten :) ?

[kimurastanley]

Just wondering if you guys keep turn this ON all the time or just during listening period - if not forgotten :) ?

 

I will off when not in use. But most of the time forgot and leave it on overnight

 

 

Sent from my iPhone using Tapatalk

[joeling]

Good to see measurements before and after [emoji106]

 

Was the placement behind the listening position arrived at after trying various spots in your room? 

 

Did you try placing them behind the speakers too?

 

I put offending standing wave frequency on repeat then use my SPL meter phone app to go round the room. Loudest was next to the speaker port & second loudest was the current position of the traps. Tried both locations & the best result was the current position.

[joeling]

Just wondering if you guys keep turn this ON all the time or just during listening period - if not forgotten :) ?

 

Me lazy. Just leave it on 24/7

[nfnc]

Thanks, joeling. Which app did you use?

[nfnc]

Just wondering if you guys keep turn this ON all the time or just during listening period - if not forgotten :) ?

 

All linked to the power conditioner so its on when the system is powered up, even when not listening.

 

If the AVAA is EU compliant, then the standby power consumption should only be 0.5W although I have seen the figure 5W mentioned in some review.

[joeling]

Thanks, joeling. Which app did you use?

 

iphone app named Analyzer. It has a SPL meter function.

 

 

[nfnc]

 

 

Thanks. What programme did you use to determine the room modes?

[1AngMoh]

[...]

 

Thanks. What programme did you use to determine the room modes?

 

 

This is XTZ’s Room Analyzer Pro.  I also use it. 

[nfnc]

Thanks.

 

P/s. Meant to thank 1AM for the info on the XTZ Room Analyzer. His post appears to have disappeared - unsure if this is a Tapatalk issue.

[ronildoq]

U can actually use REw to measure the room modes, just need a umik-1 mic , it will tell u all the room modes. U can then use room mode eq function to do real time analysis on bass decay, moving the Q and gain accordingly as the waterfall graph changes

 

Ideally what you wanna achieve is a measurement that is 40db above noise floor, for it to be meaningful, so if your noise floor is 45db, you wanna take a 85db sweep

 

All bass below this noise floor, if say 45db , should be fully decayed within 300ms, then the bass ringing is controlled and u will enjoy a very fast tight bass

[Sound Affairs]

Another SG Customer with the PSI AVAA C20 Active Bass Trap in his setup.

 

 

 

His Feedback : 

 

Hi James, Thanks for the loan for the PSI Active Bass Trap.  The Bass traps home trial is pure poison!  Hard not to have them in my living room after trying out.  The clean up and clarity in the bass after the bass trap improved the mids and highs performance and details! 

 

Andy. 

[Sound Affairs]

Recent Setups using PSI AVAA C20 Active Bass Trap to improve the whole system performance.

 

Setup 1:

 

This customer using a customed made 15inch bass driver speakers uses the PSI AVAA C20, located at the right hand corner, behind his speakers, to solve his bass boom issue, with such a big speaker driver close to the back wall, and no other acoustic treatment.  With the corrected and accurate bass, there is actually improved resolution in the mids and highs which where previously hidden by the bass boom.  The result, no bass boom and improved detailed and sound staging across the whole spectrum. 

 

 

 

 

 

Setup 2.

 

This setup uses the active ADAM tensor speakers (dual 10 inch) in a typical HDB room.  The bass boom is so bad the room door and window grills rattles when strong bass tracks are played.  The user tried to "treated" the problem with traditional corner foam based "bass" traps with little effect.

 

With the use of 2 x PSI AVAA C20 active bass traps behind his speakers, his room Bass Boom issue is SOLVED. No more rattling and improved levels of details across all frequency spectrum.  The old ineffective foam bass traps are removed for even better room acoustics

 

The PSI AVAA C20 Active Bass Traps remains the ONLY effective and PROVEN bass absorber solution below 60hz (it works from 15hz to 125hz), that is small in size and elegant in usage.

 

James.

[ronildoq]

Oh, having completed my room acoustics, I will still want to see if the PSI helps, I believe it will, it did clean up and improve the decay times <40hz...

 

Will take some measurements and confirm as well...